$("#div1").mouseenter(function() {
	$(this).css({
		"background-color": "red",
		"color": "red"
	});
	 $(this).children().css("background-color","white");
});
$("#div1").mouseleave(function() {
	$(this).css({
		"background-color": "black",
		"color": "white"
	});
	  $(this).children().css("background-color","black");
});
